I Am An MS Patient, A Surgery That I Had

I am an MS patient, a surgery that I had last week to have my gallbladder removed,
cause me to go into a locked-in syndrome that's what the surgeon called it. I was totally aware of everything in the recovery room but no voluntary muscles would respond including opening the eyes. Luckily one of the anesthesiologist had gave me a twilight shot before surgery and had read somewhere someone not coming out of sleep because of that of the twilight shot and causing these type of symptoms. Everyone thought I was sleeping when I wasn't.
Now The urologist is talking about conducting a surgery soon on my priostate. My question is is it possible that I go into another lock-in syndrome, and not come out of it? Should I stay with a permanent use of A catheter or have my priostate operated on.

Should I redo my end-of-life directive to show what I wish if I were to go into another episode of locked in or will my original directive work